-58.32% is the change from 667 to 278
Calculation steps:
[( 278 - 667 ) ÷ 667] x 100 = -58.32%
Formula
Percentage change = [(278 - 667) / 667] x 100
Subtract the new number by the original number
278 - 667 = -389
-389 ÷ 667 = -0.5832083958020989
-0.5832083958020989 x 100 = -58.32%