-74.92% is the change from 311 to 78
Calculation steps:
[( 78 - 311 ) ÷ 311] x 100 = -74.92%
Formula
Percentage change = [(78 - 311) / 311] x 100
Subtract the new number by the original number
78 - 311 = -233
-233 ÷ 311 = -0.7491961414790996
-0.7491961414790996 x 100 = -74.92%