-45.22% is the change from 502 to 275
Calculation steps:
[( 275 - 502 ) ÷ 502] x 100 = -45.22%
Formula
Percentage change = [(275 - 502) / 502] x 100
Subtract the new number by the original number
275 - 502 = -227
-227 ÷ 502 = -0.45219123505976094
-0.45219123505976094 x 100 = -45.22%