64.36% is the change from 101 to 166
Calculation steps:
[( 166 - 101 ) ÷ 101] x 100 = 64.36%
Formula
Percentage change = [(166 - 101) / 101] x 100
Subtract the new number by the original number
166 - 101 = 65
65 ÷ 101 = 0.6435643564356436
0.6435643564356436 x 100 = 64.36%