1040% is the change from 20 to 228
Calculation steps:
[( 228 - 20 ) ÷ 20] x 100 = 1040%
Formula
Percentage change = [(228 - 20) / 20] x 100
Subtract the new number by the original number
228 - 20 = 208
208 ÷ 20 = 10.4
10.4 x 100 = 1040%
Example