-37.24% is the change from 980 to 615
Calculation steps:
[( 615 - 980 ) ÷ 980] x 100 = -37.24%
Formula
Percentage change = [(615 - 980) / 980] x 100
Subtract the new number by the original number
615 - 980 = -365
-365 ÷ 980 = -0.37244897959183676
-0.37244897959183676 x 100 = -37.24%