79.52% is the change from 83 to 149
Calculation steps:
[( 149 - 83 ) ÷ 83] x 100 = 79.52%
Formula
Percentage change = [(149 - 83) / 83] x 100
Subtract the new number by the original number
149 - 83 = 66
66 ÷ 83 = 0.7951807228915663
0.7951807228915663 x 100 = 79.52%