263.86% is the change from 83 to 302
Calculation steps:
[( 302 - 83 ) ÷ 83] x 100 = 263.86%
Formula
Percentage change = [(302 - 83) / 83] x 100
Subtract the new number by the original number
302 - 83 = 219
219 ÷ 83 = 2.63855421686747
2.63855421686747 x 100 = 263.86%