-91.5% is the change from 306 to 26
Calculation steps:
[( 26 - 306 ) ÷ 306] x 100 = -91.5%
Formula
Percentage change = [(26 - 306) / 306] x 100
Subtract the new number by the original number
26 - 306 = -280
-280 ÷ 306 = -0.9150326797385621
-0.9150326797385621 x 100 = -91.5%