-91.98% is the change from 511 to 41
Calculation steps:
[( 41 - 511 ) ÷ 511] x 100 = -91.98%
Formula
Percentage change = [(41 - 511) / 511] x 100
Subtract the new number by the original number
41 - 511 = -470
-470 ÷ 511 = -0.9197651663405088
-0.9197651663405088 x 100 = -91.98%