-51.61% is the change from 527 to 255
Calculation steps:
[( 255 - 527 ) ÷ 527] x 100 = -51.61%
Formula
Percentage change = [(255 - 527) / 527] x 100
Subtract the new number by the original number
255 - 527 = -272
-272 ÷ 527 = -0.5161290322580645
-0.5161290322580645 x 100 = -51.61%