-67.27% is the change from 275 to 90
Calculation steps:
[( 90 - 275 ) ÷ 275] x 100 = -67.27%
Formula
Percentage change = [(90 - 275) / 275] x 100
Subtract the new number by the original number
90 - 275 = -185
-185 ÷ 275 = -0.6727272727272727
-0.6727272727272727 x 100 = -67.27%