-19.41% is the change from 510 to 411
Calculation steps:
[( 411 - 510 ) ÷ 510] x 100 = -19.41%
Formula
Percentage change = [(411 - 510) / 510] x 100
Subtract the new number by the original number
411 - 510 = -99
-99 ÷ 510 = -0.19411764705882353
-0.19411764705882353 x 100 = -19.41%