-50.1% is the change from 974 to 486
Calculation steps:
[( 486 - 974 ) ÷ 974] x 100 = -50.1%
Formula
Percentage change = [(486 - 974) / 974] x 100
Subtract the new number by the original number
486 - 974 = -488
-488 ÷ 974 = -0.5010266940451745
-0.5010266940451745 x 100 = -50.1%