-11.54% is the change from 615 to 544
Calculation steps:
[( 544 - 615 ) ÷ 615] x 100 = -11.54%
Formula
Percentage change = [(544 - 615) / 615] x 100
Subtract the new number by the original number
544 - 615 = -71
-71 ÷ 615 = -0.11544715447154472
-0.11544715447154472 x 100 = -11.54%