-32.5% is the change from 517 to 349
Calculation steps:
[( 349 - 517 ) ÷ 517] x 100 = -32.5%
Formula
Percentage change = [(349 - 517) / 517] x 100
Subtract the new number by the original number
349 - 517 = -168
-168 ÷ 517 = -0.32495164410058025
-0.32495164410058025 x 100 = -32.5%
Example