-52.42% is the change from 990 to 471
Calculation steps:
[( 471 - 990 ) ÷ 990] x 100 = -52.42%
Formula
Percentage change = [(471 - 990) / 990] x 100
Subtract the new number by the original number
471 - 990 = -519
-519 ÷ 990 = -0.5242424242424243
-0.5242424242424243 x 100 = -52.42%