-91.88% is the change from 320 to 26
Calculation steps:
[( 26 - 320 ) ÷ 320] x 100 = -91.88%
Formula
Percentage change = [(26 - 320) / 320] x 100
Subtract the new number by the original number
26 - 320 = -294
-294 ÷ 320 = -0.91875
-0.91875 x 100 = -91.88%