25.38% is the change from 662 to 830
Calculation steps:
[( 830 - 662 ) ÷ 662] x 100 = 25.38%
Formula
Percentage change = [(830 - 662) / 662] x 100
Subtract the new number by the original number
830 - 662 = 168
168 ÷ 662 = 0.2537764350453172
0.2537764350453172 x 100 = 25.38%