8.46% is the change from 615 to 667
Calculation steps:
[( 667 - 615 ) ÷ 615] x 100 = 8.46%
Formula
Percentage change = [(667 - 615) / 615] x 100
Subtract the new number by the original number
667 - 615 = 52
52 ÷ 615 = 0.08455284552845528
0.08455284552845528 x 100 = 8.46%