-66.13% is the change from 806 to 273
Calculation steps:
[( 273 - 806 ) ÷ 806] x 100 = -66.13%
Formula
Percentage change = [(273 - 806) / 806] x 100
Subtract the new number by the original number
273 - 806 = -533
-533 ÷ 806 = -0.6612903225806451
-0.6612903225806451 x 100 = -66.13%