-84.09% is the change from 132 to 21
Calculation steps:
[( 21 - 132 ) ÷ 132] x 100 = -84.09%
Formula
Percentage change = [(21 - 132) / 132] x 100
Subtract the new number by the original number
21 - 132 = -111
-111 ÷ 132 = -0.8409090909090909
-0.8409090909090909 x 100 = -84.09%