-89.42% is the change from 189 to 20
Calculation steps:
[( 20 - 189 ) ÷ 189] x 100 = -89.42%
Formula
Percentage change = [(20 - 189) / 189] x 100
Subtract the new number by the original number
20 - 189 = -169
-169 ÷ 189 = -0.8941798941798942
-0.8941798941798942 x 100 = -89.42%