-40.41% is the change from 970 to 578
Calculation steps:
[( 578 - 970 ) ÷ 970] x 100 = -40.41%
Formula
Percentage change = [(578 - 970) / 970] x 100
Subtract the new number by the original number
578 - 970 = -392
-392 ÷ 970 = -0.4041237113402062
-0.4041237113402062 x 100 = -40.41%