-86.75% is the change from 151 to 20
Calculation steps:
[( 20 - 151 ) ÷ 151] x 100 = -86.75%
Formula
Percentage change = [(20 - 151) / 151] x 100
Subtract the new number by the original number
20 - 151 = -131
-131 ÷ 151 = -0.8675496688741722
-0.8675496688741722 x 100 = -86.75%