78.65% is the change from 281 to 502
Calculation steps:
[( 502 - 281 ) ÷ 281] x 100 = 78.65%
Formula
Percentage change = [(502 - 281) / 281] x 100
Subtract the new number by the original number
502 - 281 = 221
221 ÷ 281 = 0.7864768683274022
0.7864768683274022 x 100 = 78.65%