-13.78% is the change from 588 to 507
Calculation steps:
[( 507 - 588 ) ÷ 588] x 100 = -13.78%
Formula
Percentage change = [(507 - 588) / 588] x 100
Subtract the new number by the original number
507 - 588 = -81
-81 ÷ 588 = -0.1377551020408163
-0.1377551020408163 x 100 = -13.78%