328.57% is the change from 210 to 900
Calculation steps:
[( 900 - 210 ) ÷ 210] x 100 = 328.57%
Formula
Percentage change = [(900 - 210) / 210] x 100
Subtract the new number by the original number
900 - 210 = 690
690 ÷ 210 = 3.2857142857142856
3.2857142857142856 x 100 = 328.57%