-65.52% is the change from 290 to 100
Calculation steps:
[( 100 - 290 ) ÷ 290] x 100 = -65.52%
Formula
Percentage change = [(100 - 290) / 290] x 100
Subtract the new number by the original number
100 - 290 = -190
-190 ÷ 290 = -0.6551724137931034
-0.6551724137931034 x 100 = -65.52%