-46.32% is the change from 570 to 306
Calculation steps:
[( 306 - 570 ) ÷ 570] x 100 = -46.32%
Formula
Percentage change = [(306 - 570) / 570] x 100
Subtract the new number by the original number
306 - 570 = -264
-264 ÷ 570 = -0.4631578947368421
-0.4631578947368421 x 100 = -46.32%