-54.39% is the change from 991 to 452
Calculation steps:
[( 452 - 991 ) ÷ 991] x 100 = -54.39%
Formula
Percentage change = [(452 - 991) / 991] x 100
Subtract the new number by the original number
452 - 991 = -539
-539 ÷ 991 = -0.5438950554994955
-0.5438950554994955 x 100 = -54.39%