-45.42% is the change from 918 to 501
Calculation steps:
[( 501 - 918 ) ÷ 918] x 100 = -45.42%
Formula
Percentage change = [(501 - 918) / 918] x 100
Subtract the new number by the original number
501 - 918 = -417
-417 ÷ 918 = -0.4542483660130719
-0.4542483660130719 x 100 = -45.42%