-80.56% is the change from 540 to 105
Calculation steps:
[( 105 - 540 ) ÷ 540] x 100 = -80.56%
Formula
Percentage change = [(105 - 540) / 540] x 100
Subtract the new number by the original number
105 - 540 = -435
-435 ÷ 540 = -0.8055555555555556
-0.8055555555555556 x 100 = -80.56%