-32.22% is the change from 900 to 610
Calculation steps:
[( 610 - 900 ) ÷ 900] x 100 = -32.22%
Formula
Percentage change = [(610 - 900) / 900] x 100
Subtract the new number by the original number
610 - 900 = -290
-290 ÷ 900 = -0.32222222222222224
-0.32222222222222224 x 100 = -32.22%