-91.65% is the change from 503 to 42
Calculation steps:
[( 42 - 503 ) ÷ 503] x 100 = -91.65%
Formula
Percentage change = [(42 - 503) / 503] x 100
Subtract the new number by the original number
42 - 503 = -461
-461 ÷ 503 = -0.9165009940357853
-0.9165009940357853 x 100 = -91.65%