216.9% is the change from 284 to 900
Calculation steps:
[( 900 - 284 ) ÷ 284] x 100 = 216.9%
Formula
Percentage change = [(900 - 284) / 284] x 100
Subtract the new number by the original number
900 - 284 = 616
616 ÷ 284 = 2.1690140845070425
2.1690140845070425 x 100 = 216.9%