-66.17% is the change from 807 to 273
Calculation steps:
[( 273 - 807 ) ÷ 807] x 100 = -66.17%
Formula
Percentage change = [(273 - 807) / 807] x 100
Subtract the new number by the original number
273 - 807 = -534
-534 ÷ 807 = -0.6617100371747212
-0.6617100371747212 x 100 = -66.17%