-93.81% is the change from 291 to 18
Calculation steps:
[( 18 - 291 ) ÷ 291] x 100 = -93.81%
Formula
Percentage change = [(18 - 291) / 291] x 100
Subtract the new number by the original number
18 - 291 = -273
-273 ÷ 291 = -0.9381443298969072
-0.9381443298969072 x 100 = -93.81%