-89.36% is the change from 188 to 20
Calculation steps:
[( 20 - 188 ) ÷ 188] x 100 = -89.36%
Formula
Percentage change = [(20 - 188) / 188] x 100
Subtract the new number by the original number
20 - 188 = -168
-168 ÷ 188 = -0.8936170212765957
-0.8936170212765957 x 100 = -89.36%