-65.55% is the change from 807 to 278
Calculation steps:
[( 278 - 807 ) ÷ 807] x 100 = -65.55%
Formula
Percentage change = [(278 - 807) / 807] x 100
Subtract the new number by the original number
278 - 807 = -529
-529 ÷ 807 = -0.6555142503097894
-0.6555142503097894 x 100 = -65.55%