-48.24% is the change from 510 to 264
Calculation steps:
[( 264 - 510 ) ÷ 510] x 100 = -48.24%
Formula
Percentage change = [(264 - 510) / 510] x 100
Subtract the new number by the original number
264 - 510 = -246
-246 ÷ 510 = -0.4823529411764706
-0.4823529411764706 x 100 = -48.24%