-57.3% is the change from 651 to 278
Calculation steps:
[( 278 - 651 ) ÷ 651] x 100 = -57.3%
Formula
Percentage change = [(278 - 651) / 651] x 100
Subtract the new number by the original number
278 - 651 = -373
-373 ÷ 651 = -0.5729646697388633
-0.5729646697388633 x 100 = -57.3%