-39.46% is the change from 517 to 313
Calculation steps:
[( 313 - 517 ) ÷ 517] x 100 = -39.46%
Formula
Percentage change = [(313 - 517) / 517] x 100
Subtract the new number by the original number
313 - 517 = -204
-204 ÷ 517 = -0.3945841392649903
-0.3945841392649903 x 100 = -39.46%