300% is the change from 88 to 352
Calculation steps:
[( 352 - 88 ) ÷ 88] x 100 = 300%
Formula
Percentage change = [(352 - 88) / 88] x 100
Subtract the new number by the original number
352 - 88 = 264
264 ÷ 88 = 3
3 x 100 = 300%
Example