69.92% is the change from 123 to 209
Calculation steps:
[( 209 - 123 ) ÷ 123] x 100 = 69.92%
Formula
Percentage change = [(209 - 123) / 123] x 100
Subtract the new number by the original number
209 - 123 = 86
86 ÷ 123 = 0.6991869918699187
0.6991869918699187 x 100 = 69.92%