-90.22% is the change from 501 to 49
Calculation steps:
[( 49 - 501 ) ÷ 501] x 100 = -90.22%
Formula
Percentage change = [(49 - 501) / 501] x 100
Subtract the new number by the original number
49 - 501 = -452
-452 ÷ 501 = -0.9021956087824351
-0.9021956087824351 x 100 = -90.22%