-34.26% is the change from 324 to 213
Calculation steps:
[( 213 - 324 ) ÷ 324] x 100 = -34.26%
Formula
Percentage change = [(213 - 324) / 324] x 100
Subtract the new number by the original number
213 - 324 = -111
-111 ÷ 324 = -0.3425925925925926
-0.3425925925925926 x 100 = -34.26%