121.93% is the change from 228 to 506
Calculation steps:
[( 506 - 228 ) ÷ 228] x 100 = 121.93%
Formula
Percentage change = [(506 - 228) / 228] x 100
Subtract the new number by the original number
506 - 228 = 278
278 ÷ 228 = 1.219298245614035
1.219298245614035 x 100 = 121.93%