-91.93% is the change from 347 to 28
Calculation steps:
[( 28 - 347 ) ÷ 347] x 100 = -91.93%
Formula
Percentage change = [(28 - 347) / 347] x 100
Subtract the new number by the original number
28 - 347 = -319
-319 ÷ 347 = -0.9193083573487032
-0.9193083573487032 x 100 = -91.93%