26.54% is the change from 486 to 615
Calculation steps:
[( 615 - 486 ) ÷ 486] x 100 = 26.54%
Formula
Percentage change = [(615 - 486) / 486] x 100
Subtract the new number by the original number
615 - 486 = 129
129 ÷ 486 = 0.2654320987654321
0.2654320987654321 x 100 = 26.54%