206.45% is the change from 217 to 665
Calculation steps:
[( 665 - 217 ) ÷ 217] x 100 = 206.45%
Formula
Percentage change = [(665 - 217) / 217] x 100
Subtract the new number by the original number
665 - 217 = 448
448 ÷ 217 = 2.064516129032258
2.064516129032258 x 100 = 206.45%