204.72% is the change from 212 to 646
Calculation steps:
[( 646 - 212 ) ÷ 212] x 100 = 204.72%
Formula
Percentage change = [(646 - 212) / 212] x 100
Subtract the new number by the original number
646 - 212 = 434
434 ÷ 212 = 2.047169811320755
2.047169811320755 x 100 = 204.72%