If you believe the calculation to be incorrect you owe it to yourself to identify the error. It should take much less time for you to do that than it took me to compile and reference the calculation for _you_.
The IPCC has compiled known options for getting CO2 down, including aforestation. Its not revealing to focus on the relative rate of change - we increased CO2 at an unprecedented rate, if you would read the IPCC reports or articles concerning the subject with a basic level of regard, you could learn it is in fact possible to also decrease at an unprecedented rate.
The IPCC has compiled known options for getting CO2 down, including aforestation. Its not revealing to focus on the relative rate of change - we increased CO2 at an unprecedented rate, if you would read the IPCC reports or articles concerning the subject with a basic level of regard, you could learn it is in fact possible to also decrease at an unprecedented rate.