-52.17% is the change from 991 to 474
Calculation steps:
[( 474 - 991 ) ÷ 991] x 100 = -52.17%
Formula
Percentage change = [(474 - 991) / 991] x 100
Subtract the new number by the original number
474 - 991 = -517
-517 ÷ 991 = -0.5216952573158425
-0.5216952573158425 x 100 = -52.17%