-94.55% is the change from 991 to 54
Calculation steps:
[( 54 - 991 ) ÷ 991] x 100 = -94.55%
Formula
Percentage change = [(54 - 991) / 991] x 100
Subtract the new number by the original number
54 - 991 = -937
-937 ÷ 991 = -0.9455095862764884
-0.9455095862764884 x 100 = -94.55%