24.05% is the change from 657 to 815
Calculation steps:
[( 815 - 657 ) ÷ 657] x 100 = 24.05%
Formula
Percentage change = [(815 - 657) / 657] x 100
Subtract the new number by the original number
815 - 657 = 158
158 ÷ 657 = 0.2404870624048706
0.2404870624048706 x 100 = 24.05%