-69.72% is the change from 918 to 278
Calculation steps:
[( 278 - 918 ) ÷ 918] x 100 = -69.72%
Formula
Percentage change = [(278 - 918) / 918] x 100
Subtract the new number by the original number
278 - 918 = -640
-640 ÷ 918 = -0.6971677559912854
-0.6971677559912854 x 100 = -69.72%