-71.3% is the change from 338 to 97
Calculation steps:
[( 97 - 338 ) ÷ 338] x 100 = -71.3%
Formula
Percentage change = [(97 - 338) / 338] x 100
Subtract the new number by the original number
97 - 338 = -241
-241 ÷ 338 = -0.7130177514792899
-0.7130177514792899 x 100 = -71.3%