-23.46% is the change from 81 to 62
Calculation steps:
[( 62 - 81 ) ÷ 81] x 100 = -23.46%
Formula
Percentage change = [(62 - 81) / 81] x 100
Subtract the new number by the original number
62 - 81 = -19
-19 ÷ 81 = -0.2345679012345679
-0.2345679012345679 x 100 = -23.46%