66.87% is the change from 166 to 277
Calculation steps:
[( 277 - 166 ) ÷ 166] x 100 = 66.87%
Formula
Percentage change = [(277 - 166) / 166] x 100
Subtract the new number by the original number
277 - 166 = 111
111 ÷ 166 = 0.6686746987951807
0.6686746987951807 x 100 = 66.87%