-60% is the change from 570 to 228
Calculation steps:
[( 228 - 570 ) ÷ 570] x 100 = -60%
Formula
Percentage change = [(228 - 570) / 570] x 100
Subtract the new number by the original number
228 - 570 = -342
-342 ÷ 570 = -0.6
-0.6 x 100 = -60%
Example