-86.01% is the change from 972 to 136
Calculation steps:
[( 136 - 972 ) ÷ 972] x 100 = -86.01%
Formula
Percentage change = [(136 - 972) / 972] x 100
Subtract the new number by the original number
136 - 972 = -836
-836 ÷ 972 = -0.8600823045267489
-0.8600823045267489 x 100 = -86.01%