-98.98% is the change from 980 to 10
Calculation steps:
[( 10 - 980 ) ÷ 980] x 100 = -98.98%
Formula
Percentage change = [(10 - 980) / 980] x 100
Subtract the new number by the original number
10 - 980 = -970
-970 ÷ 980 = -0.9897959183673469
-0.9897959183673469 x 100 = -98.98%