57.89% is the change from 615 to 971
Calculation steps:
[( 971 - 615 ) ÷ 615] x 100 = 57.89%
Formula
Percentage change = [(971 - 615) / 615] x 100
Subtract the new number by the original number
971 - 615 = 356
356 ÷ 615 = 0.5788617886178862
0.5788617886178862 x 100 = 57.89%