-47% is the change from 900 to 477
Calculation steps:
[( 477 - 900 ) ÷ 900] x 100 = -47%
Formula
Percentage change = [(477 - 900) / 900] x 100
Subtract the new number by the original number
477 - 900 = -423
-423 ÷ 900 = -0.47
-0.47 x 100 = -47%
Example