-45.97% is the change from 509 to 275
Calculation steps:
[( 275 - 509 ) ÷ 509] x 100 = -45.97%
Formula
Percentage change = [(275 - 509) / 509] x 100
Subtract the new number by the original number
275 - 509 = -234
-234 ÷ 509 = -0.45972495088408644
-0.45972495088408644 x 100 = -45.97%