-59.18% is the change from 980 to 400
Calculation steps:
[( 400 - 980 ) ÷ 980] x 100 = -59.18%
Formula
Percentage change = [(400 - 980) / 980] x 100
Subtract the new number by the original number
400 - 980 = -580
-580 ÷ 980 = -0.5918367346938775
-0.5918367346938775 x 100 = -59.18%