2022.5% is the change from 40 to 849
Calculation steps:
[( 849 - 40 ) ÷ 40] x 100 = 2022.5%
Formula
Percentage change = [(849 - 40) / 40] x 100
Subtract the new number by the original number
849 - 40 = 809
809 ÷ 40 = 20.225
20.225 x 100 = 2022.5%
Example