-91.9% is the change from 321 to 26
Calculation steps:
[( 26 - 321 ) ÷ 321] x 100 = -91.9%
Formula
Percentage change = [(26 - 321) / 321] x 100
Subtract the new number by the original number
26 - 321 = -295
-295 ÷ 321 = -0.9190031152647975
-0.9190031152647975 x 100 = -91.9%