-91.27% is the change from 997 to 87
Calculation steps:
[( 87 - 997 ) ÷ 997] x 100 = -91.27%
Formula
Percentage change = [(87 - 997) / 997] x 100
Subtract the new number by the original number
87 - 997 = -910
-910 ÷ 997 = -0.9127382146439318
-0.9127382146439318 x 100 = -91.27%