228.57% is the change from 210 to 690
Calculation steps:
[( 690 - 210 ) ÷ 210] x 100 = 228.57%
Formula
Percentage change = [(690 - 210) / 210] x 100
Subtract the new number by the original number
690 - 210 = 480
480 ÷ 210 = 2.2857142857142856
2.2857142857142856 x 100 = 228.57%