-42.84% is the change from 880 to 503
Calculation steps:
[( 503 - 880 ) ÷ 880] x 100 = -42.84%
Formula
Percentage change = [(503 - 880) / 880] x 100
Subtract the new number by the original number
503 - 880 = -377
-377 ÷ 880 = -0.4284090909090909
-0.4284090909090909 x 100 = -42.84%