-83.81% is the change from 278 to 45
Calculation steps:
[( 45 - 278 ) ÷ 278] x 100 = -83.81%
Formula
Percentage change = [(45 - 278) / 278] x 100
Subtract the new number by the original number
45 - 278 = -233
-233 ÷ 278 = -0.8381294964028777
-0.8381294964028777 x 100 = -83.81%