196.77% is the change from 217 to 644
Calculation steps:
[( 644 - 217 ) ÷ 217] x 100 = 196.77%
Formula
Percentage change = [(644 - 217) / 217] x 100
Subtract the new number by the original number
644 - 217 = 427
427 ÷ 217 = 1.967741935483871
1.967741935483871 x 100 = 196.77%