278.05% is the change from 82 to 310
Calculation steps:
[( 310 - 82 ) ÷ 82] x 100 = 278.05%
Formula
Percentage change = [(310 - 82) / 82] x 100
Subtract the new number by the original number
310 - 82 = 228
228 ÷ 82 = 2.7804878048780486
2.7804878048780486 x 100 = 278.05%