385.71% is the change from 63 to 306
Calculation steps:
[( 306 - 63 ) ÷ 63] x 100 = 385.71%
Formula
Percentage change = [(306 - 63) / 63] x 100
Subtract the new number by the original number
306 - 63 = 243
243 ÷ 63 = 3.857142857142857
3.857142857142857 x 100 = 385.71%