-41.2% is the change from 517 to 304
Calculation steps:
[( 304 - 517 ) ÷ 517] x 100 = -41.2%
Formula
Percentage change = [(304 - 517) / 517] x 100
Subtract the new number by the original number
304 - 517 = -213
-213 ÷ 517 = -0.4119922630560928
-0.4119922630560928 x 100 = -41.2%