-87.49% is the change from 991 to 124
Calculation steps:
[( 124 - 991 ) ÷ 991] x 100 = -87.49%
Formula
Percentage change = [(124 - 991) / 991] x 100
Subtract the new number by the original number
124 - 991 = -867
-867 ÷ 991 = -0.8748738647830474
-0.8748738647830474 x 100 = -87.49%