-13.32% is the change from 578 to 501
Calculation steps:
[( 501 - 578 ) ÷ 578] x 100 = -13.32%
Formula
Percentage change = [(501 - 578) / 578] x 100
Subtract the new number by the original number
501 - 578 = -77
-77 ÷ 578 = -0.13321799307958476
-0.13321799307958476 x 100 = -13.32%