-91.03% is the change from 290 to 26
Calculation steps:
[( 26 - 290 ) ÷ 290] x 100 = -91.03%
Formula
Percentage change = [(26 - 290) / 290] x 100
Subtract the new number by the original number
26 - 290 = -264
-264 ÷ 290 = -0.9103448275862069
-0.9103448275862069 x 100 = -91.03%