-30.3% is the change from 726 to 506
Calculation steps:
[( 506 - 726 ) ÷ 726] x 100 = -30.3%
Formula
Percentage change = [(506 - 726) / 726] x 100
Subtract the new number by the original number
506 - 726 = -220
-220 ÷ 726 = -0.30303030303030304
-0.30303030303030304 x 100 = -30.3%