-3.06% is the change from 588 to 570
Calculation steps:
[( 570 - 588 ) ÷ 588] x 100 = -3.06%
Formula
Percentage change = [(570 - 588) / 588] x 100
Subtract the new number by the original number
570 - 588 = -18
-18 ÷ 588 = -0.030612244897959183
-0.030612244897959183 x 100 = -3.06%