30650% is the change from 2 to 615
Calculation steps:
[( 615 - 2 ) ÷ 2] x 100 = 30650%
Formula
Percentage change = [(615 - 2) / 2] x 100
Subtract the new number by the original number
615 - 2 = 613
613 ÷ 2 = 306.5
306.5 x 100 = 30650%
Example