-93.48% is the change from 276 to 18
Calculation steps:
[( 18 - 276 ) ÷ 276] x 100 = -93.48%
Formula
Percentage change = [(18 - 276) / 276] x 100
Subtract the new number by the original number
18 - 276 = -258
-258 ÷ 276 = -0.9347826086956522
-0.9347826086956522 x 100 = -93.48%