-47.2% is the change from 517 to 273
Calculation steps:
[( 273 - 517 ) ÷ 517] x 100 = -47.2%
Formula
Percentage change = [(273 - 517) / 517] x 100
Subtract the new number by the original number
273 - 517 = -244
-244 ÷ 517 = -0.47195357833655704
-0.47195357833655704 x 100 = -47.2%