-87.55% is the change from 972 to 121
Calculation steps:
[( 121 - 972 ) ÷ 972] x 100 = -87.55%
Formula
Percentage change = [(121 - 972) / 972] x 100
Subtract the new number by the original number
121 - 972 = -851
-851 ÷ 972 = -0.8755144032921811
-0.8755144032921811 x 100 = -87.55%