-13.44% is the change from 588 to 509
Calculation steps:
[( 509 - 588 ) ÷ 588] x 100 = -13.44%
Formula
Percentage change = [(509 - 588) / 588] x 100
Subtract the new number by the original number
509 - 588 = -79
-79 ÷ 588 = -0.13435374149659865
-0.13435374149659865 x 100 = -13.44%