3450% is the change from 6 to 213
Calculation steps:
[( 213 - 6 ) ÷ 6] x 100 = 3450%
Formula
Percentage change = [(213 - 6) / 6] x 100
Subtract the new number by the original number
213 - 6 = 207
207 ÷ 6 = 34.5
34.5 x 100 = 3450%
Example