-64.01% is the change from 339 to 122
Calculation steps:
[( 122 - 339 ) ÷ 339] x 100 = -64.01%
Formula
Percentage change = [(122 - 339) / 339] x 100
Subtract the new number by the original number
122 - 339 = -217
-217 ÷ 339 = -0.640117994100295
-0.640117994100295 x 100 = -64.01%