-67.78% is the change from 900 to 290
Calculation steps:
[( 290 - 900 ) ÷ 900] x 100 = -67.78%
Formula
Percentage change = [(290 - 900) / 900] x 100
Subtract the new number by the original number
290 - 900 = -610
-610 ÷ 900 = -0.6777777777777778
-0.6777777777777778 x 100 = -67.78%