-31.5% is the change from 946 to 648
Calculation steps:
[( 648 - 946 ) ÷ 946] x 100 = -31.5%
Formula
Percentage change = [(648 - 946) / 946] x 100
Subtract the new number by the original number
648 - 946 = -298
-298 ÷ 946 = -0.3150105708245243
-0.3150105708245243 x 100 = -31.5%