-79.61% is the change from 152 to 31
Calculation steps:
[( 31 - 152 ) ÷ 152] x 100 = -79.61%
Formula
Percentage change = [(31 - 152) / 152] x 100
Subtract the new number by the original number
31 - 152 = -121
-121 ÷ 152 = -0.7960526315789473
-0.7960526315789473 x 100 = -79.61%