-6.02% is the change from 615 to 578
Calculation steps:
[( 578 - 615 ) ÷ 615] x 100 = -6.02%
Formula
Percentage change = [(578 - 615) / 615] x 100
Subtract the new number by the original number
578 - 615 = -37
-37 ÷ 615 = -0.06016260162601626
-0.06016260162601626 x 100 = -6.02%