-36.26% is the change from 615 to 392
Calculation steps:
[( 392 - 615 ) ÷ 615] x 100 = -36.26%
Formula
Percentage change = [(392 - 615) / 615] x 100
Subtract the new number by the original number
392 - 615 = -223
-223 ÷ 615 = -0.36260162601626017
-0.36260162601626017 x 100 = -36.26%