128.51% is the change from 228 to 521
Calculation steps:
[( 521 - 228 ) ÷ 228] x 100 = 128.51%
Formula
Percentage change = [(521 - 228) / 228] x 100
Subtract the new number by the original number
521 - 228 = 293
293 ÷ 228 = 1.2850877192982457
1.2850877192982457 x 100 = 128.51%