-94.21% is the change from 311 to 18
Calculation steps:
[( 18 - 311 ) ÷ 311] x 100 = -94.21%
Formula
Percentage change = [(18 - 311) / 311] x 100
Subtract the new number by the original number
18 - 311 = -293
-293 ÷ 311 = -0.9421221864951769
-0.9421221864951769 x 100 = -94.21%