-86.16% is the change from 997 to 138
Calculation steps:
[( 138 - 997 ) ÷ 997] x 100 = -86.16%
Formula
Percentage change = [(138 - 997) / 997] x 100
Subtract the new number by the original number
138 - 997 = -859
-859 ÷ 997 = -0.8615847542627884
-0.8615847542627884 x 100 = -86.16%