225% is the change from 28 to 91
Calculation steps:
[( 91 - 28 ) ÷ 28] x 100 = 225%
Formula
Percentage change = [(91 - 28) / 28] x 100
Subtract the new number by the original number
91 - 28 = 63
63 ÷ 28 = 2.25
2.25 x 100 = 225%
Example