-48.43% is the change from 510 to 263
Calculation steps:
[( 263 - 510 ) ÷ 510] x 100 = -48.43%
Formula
Percentage change = [(263 - 510) / 510] x 100
Subtract the new number by the original number
263 - 510 = -247
-247 ÷ 510 = -0.4843137254901961
-0.4843137254901961 x 100 = -48.43%