-38.92% is the change from 519 to 317
Calculation steps:
[( 317 - 519 ) ÷ 519] x 100 = -38.92%
Formula
Percentage change = [(317 - 519) / 519] x 100
Subtract the new number by the original number
317 - 519 = -202
-202 ÷ 519 = -0.3892100192678227
-0.3892100192678227 x 100 = -38.92%