52.29% is the change from 545 to 830
Calculation steps:
[( 830 - 545 ) ÷ 545] x 100 = 52.29%
Formula
Percentage change = [(830 - 545) / 545] x 100
Subtract the new number by the original number
830 - 545 = 285
285 ÷ 545 = 0.5229357798165137
0.5229357798165137 x 100 = 52.29%