-47.78% is the change from 900 to 470
Calculation steps:
[( 470 - 900 ) ÷ 900] x 100 = -47.78%
Formula
Percentage change = [(470 - 900) / 900] x 100
Subtract the new number by the original number
470 - 900 = -430
-430 ÷ 900 = -0.4777777777777778
-0.4777777777777778 x 100 = -47.78%