294.23% is the change from 208 to 820
Calculation steps:
[( 820 - 208 ) ÷ 208] x 100 = 294.23%
Formula
Percentage change = [(820 - 208) / 208] x 100
Subtract the new number by the original number
820 - 208 = 612
612 ÷ 208 = 2.9423076923076925
2.9423076923076925 x 100 = 294.23%