-26.32% is the change from 570 to 420
Calculation steps:
[( 420 - 570 ) ÷ 570] x 100 = -26.32%
Formula
Percentage change = [(420 - 570) / 570] x 100
Subtract the new number by the original number
420 - 570 = -150
-150 ÷ 570 = -0.2631578947368421
-0.2631578947368421 x 100 = -26.32%