-82.64% is the change from 311 to 54
Calculation steps:
[( 54 - 311 ) ÷ 311] x 100 = -82.64%
Formula
Percentage change = [(54 - 311) / 311] x 100
Subtract the new number by the original number
54 - 311 = -257
-257 ÷ 311 = -0.8263665594855305
-0.8263665594855305 x 100 = -82.64%