69.77% is the change from 86 to 146
Calculation steps:
[( 146 - 86 ) ÷ 86] x 100 = 69.77%
Formula
Percentage change = [(146 - 86) / 86] x 100
Subtract the new number by the original number
146 - 86 = 60
60 ÷ 86 = 0.6976744186046512
0.6976744186046512 x 100 = 69.77%