307.66% is the change from 209 to 852
Calculation steps:
[( 852 - 209 ) ÷ 209] x 100 = 307.66%
Formula
Percentage change = [(852 - 209) / 209] x 100
Subtract the new number by the original number
852 - 209 = 643
643 ÷ 209 = 3.076555023923445
3.076555023923445 x 100 = 307.66%