-84.5% is the change from 400 to 62
Calculation steps:
[( 62 - 400 ) ÷ 400] x 100 = -84.5%
Formula
Percentage change = [(62 - 400) / 400] x 100
Subtract the new number by the original number
62 - 400 = -338
-338 ÷ 400 = -0.845
-0.845 x 100 = -84.5%
Example