-78.87% is the change from 497 to 105
Calculation steps:
[( 105 - 497 ) ÷ 497] x 100 = -78.87%
Formula
Percentage change = [(105 - 497) / 497] x 100
Subtract the new number by the original number
105 - 497 = -392
-392 ÷ 497 = -0.7887323943661971
-0.7887323943661971 x 100 = -78.87%