-30.78% is the change from 718 to 497
Calculation steps:
[( 497 - 718 ) ÷ 718] x 100 = -30.78%
Formula
Percentage change = [(497 - 718) / 718] x 100
Subtract the new number by the original number
497 - 718 = -221
-221 ÷ 718 = -0.30779944289693595
-0.30779944289693595 x 100 = -30.78%