-46.52% is the change from 991 to 530
Calculation steps:
[( 530 - 991 ) ÷ 991] x 100 = -46.52%
Formula
Percentage change = [(530 - 991) / 991] x 100
Subtract the new number by the original number
530 - 991 = -461
-461 ÷ 991 = -0.4651866801210898
-0.4651866801210898 x 100 = -46.52%