662.5% is the change from 88 to 671
Calculation steps:
[( 671 - 88 ) ÷ 88] x 100 = 662.5%
Formula
Percentage change = [(671 - 88) / 88] x 100
Subtract the new number by the original number
671 - 88 = 583
583 ÷ 88 = 6.625
6.625 x 100 = 662.5%
Example