1980% is the change from 40 to 832
Calculation steps:
[( 832 - 40 ) ÷ 40] x 100 = 1980%
Formula
Percentage change = [(832 - 40) / 40] x 100
Subtract the new number by the original number
832 - 40 = 792
792 ÷ 40 = 19.8
19.8 x 100 = 1980%
Example