-54.05% is the change from 605 to 278
Calculation steps:
[( 278 - 605 ) ÷ 605] x 100 = -54.05%
Formula
Percentage change = [(278 - 605) / 605] x 100
Subtract the new number by the original number
278 - 605 = -327
-327 ÷ 605 = -0.540495867768595
-0.540495867768595 x 100 = -54.05%