1300% is the change from 22 to 308
Calculation steps:
[( 308 - 22 ) ÷ 22] x 100 = 1300%
Formula
Percentage change = [(308 - 22) / 22] x 100
Subtract the new number by the original number
308 - 22 = 286
286 ÷ 22 = 13
13 x 100 = 1300%
Example