179.8% is the change from 99 to 277
Calculation steps:
[( 277 - 99 ) ÷ 99] x 100 = 179.8%
Formula
Percentage change = [(277 - 99) / 99] x 100
Subtract the new number by the original number
277 - 99 = 178
178 ÷ 99 = 1.797979797979798
1.797979797979798 x 100 = 179.8%