-50.72% is the change from 970 to 478
Calculation steps:
[( 478 - 970 ) ÷ 970] x 100 = -50.72%
Formula
Percentage change = [(478 - 970) / 970] x 100
Subtract the new number by the original number
478 - 970 = -492
-492 ÷ 970 = -0.5072164948453608
-0.5072164948453608 x 100 = -50.72%