73.94% is the change from 307 to 534
Calculation steps:
[( 534 - 307 ) ÷ 307] x 100 = 73.94%
Formula
Percentage change = [(534 - 307) / 307] x 100
Subtract the new number by the original number
534 - 307 = 227
227 ÷ 307 = 0.739413680781759
0.739413680781759 x 100 = 73.94%