289.76% is the change from 166 to 647
Calculation steps:
[( 647 - 166 ) ÷ 166] x 100 = 289.76%
Formula
Percentage change = [(647 - 166) / 166] x 100
Subtract the new number by the original number
647 - 166 = 481
481 ÷ 166 = 2.897590361445783
2.897590361445783 x 100 = 289.76%