-0.33% is the change from 615 to 613
Calculation steps:
[( 613 - 615 ) ÷ 615] x 100 = -0.33%
Formula
Percentage change = [(613 - 615) / 615] x 100
Subtract the new number by the original number
613 - 615 = -2
-2 ÷ 615 = -0.0032520325203252032
-0.0032520325203252032 x 100 = -0.33%