12.2% is the change from 615 to 690
Calculation steps:
[( 690 - 615 ) ÷ 615] x 100 = 12.2%
Formula
Percentage change = [(690 - 615) / 615] x 100
Subtract the new number by the original number
690 - 615 = 75
75 ÷ 615 = 0.12195121951219512
0.12195121951219512 x 100 = 12.2%