720% is the change from 75 to 615
Calculation steps:
[( 615 - 75 ) ÷ 75] x 100 = 720%
Formula
Percentage change = [(615 - 75) / 75] x 100
Subtract the new number by the original number
615 - 75 = 540
540 ÷ 75 = 7.2
7.2 x 100 = 720%
Example