-9.78% is the change from 501 to 452
Calculation steps:
[( 452 - 501 ) ÷ 501] x 100 = -9.78%
Formula
Percentage change = [(452 - 501) / 501] x 100
Subtract the new number by the original number
452 - 501 = -49
-49 ÷ 501 = -0.09780439121756487
-0.09780439121756487 x 100 = -9.78%