-37.52% is the change from 517 to 323
Calculation steps:
[( 323 - 517 ) ÷ 517] x 100 = -37.52%
Formula
Percentage change = [(323 - 517) / 517] x 100
Subtract the new number by the original number
323 - 517 = -194
-194 ÷ 517 = -0.37524177949709864
-0.37524177949709864 x 100 = -37.52%