266.2% is the change from 142 to 520
Calculation steps:
[( 520 - 142 ) ÷ 142] x 100 = 266.2%
Formula
Percentage change = [(520 - 142) / 142] x 100
Subtract the new number by the original number
520 - 142 = 378
378 ÷ 142 = 2.6619718309859155
2.6619718309859155 x 100 = 266.2%