-38.31% is the change from 509 to 314
Calculation steps:
[( 314 - 509 ) ÷ 509] x 100 = -38.31%
Formula
Percentage change = [(314 - 509) / 509] x 100
Subtract the new number by the original number
314 - 509 = -195
-195 ÷ 509 = -0.3831041257367387
-0.3831041257367387 x 100 = -38.31%