-34.79% is the change from 983 to 641
Calculation steps:
[( 641 - 983 ) ÷ 983] x 100 = -34.79%
Formula
Percentage change = [(641 - 983) / 983] x 100
Subtract the new number by the original number
641 - 983 = -342
-342 ÷ 983 = -0.34791454730417093
-0.34791454730417093 x 100 = -34.79%