198.61% is the change from 216 to 645
Calculation steps:
[( 645 - 216 ) ÷ 216] x 100 = 198.61%
Formula
Percentage change = [(645 - 216) / 216] x 100
Subtract the new number by the original number
645 - 216 = 429
429 ÷ 216 = 1.9861111111111112
1.9861111111111112 x 100 = 198.61%