-15.92% is the change from 980 to 824
Calculation steps:
[( 824 - 980 ) ÷ 980] x 100 = -15.92%
Formula
Percentage change = [(824 - 980) / 980] x 100
Subtract the new number by the original number
824 - 980 = -156
-156 ÷ 980 = -0.15918367346938775
-0.15918367346938775 x 100 = -15.92%