122.81% is the change from 228 to 508
Calculation steps:
[( 508 - 228 ) ÷ 228] x 100 = 122.81%
Formula
Percentage change = [(508 - 228) / 228] x 100
Subtract the new number by the original number
508 - 228 = 280
280 ÷ 228 = 1.2280701754385965
1.2280701754385965 x 100 = 122.81%