-47.9% is the change from 501 to 261
Calculation steps:
[( 261 - 501 ) ÷ 501] x 100 = -47.9%
Formula
Percentage change = [(261 - 501) / 501] x 100
Subtract the new number by the original number
261 - 501 = -240
-240 ÷ 501 = -0.47904191616766467
-0.47904191616766467 x 100 = -47.9%