-66.38% is the change from 809 to 272
Calculation steps:
[( 272 - 809 ) ÷ 809] x 100 = -66.38%
Formula
Percentage change = [(272 - 809) / 809] x 100
Subtract the new number by the original number
272 - 809 = -537
-537 ÷ 809 = -0.6637824474660075
-0.6637824474660075 x 100 = -66.38%