-34.17% is the change from 319 to 210
Calculation steps:
[( 210 - 319 ) ÷ 319] x 100 = -34.17%
Formula
Percentage change = [(210 - 319) / 319] x 100
Subtract the new number by the original number
210 - 319 = -109
-109 ÷ 319 = -0.34169278996865204
-0.34169278996865204 x 100 = -34.17%