-87.18% is the change from 991 to 127
Calculation steps:
[( 127 - 991 ) ÷ 991] x 100 = -87.18%
Formula
Percentage change = [(127 - 991) / 991] x 100
Subtract the new number by the original number
127 - 991 = -864
-864 ÷ 991 = -0.8718466195761857
-0.8718466195761857 x 100 = -87.18%