-51.07% is the change from 515 to 252
Calculation steps:
[( 252 - 515 ) ÷ 515] x 100 = -51.07%
Formula
Percentage change = [(252 - 515) / 515] x 100
Subtract the new number by the original number
252 - 515 = -263
-263 ÷ 515 = -0.5106796116504855
-0.5106796116504855 x 100 = -51.07%