100% is the change from 143 to 286
Calculation steps:
[( 286 - 143 ) ÷ 143] x 100 = 100%
Formula
Percentage change = [(286 - 143) / 143] x 100
Subtract the new number by the original number
286 - 143 = 143
143 ÷ 143 = 1
1 x 100 = 100%
Example