-89.55% is the change from 201 to 21
Calculation steps:
[( 21 - 201 ) ÷ 201] x 100 = -89.55%
Formula
Percentage change = [(21 - 201) / 201] x 100
Subtract the new number by the original number
21 - 201 = -180
-180 ÷ 201 = -0.8955223880597015
-0.8955223880597015 x 100 = -89.55%