-74.07% is the change from 509 to 132
Calculation steps:
[( 132 - 509 ) ÷ 509] x 100 = -74.07%
Formula
Percentage change = [(132 - 509) / 509] x 100
Subtract the new number by the original number
132 - 509 = -377
-377 ÷ 509 = -0.7406679764243614
-0.7406679764243614 x 100 = -74.07%