-49.65% is the change from 423 to 213
Calculation steps:
[( 213 - 423 ) ÷ 423] x 100 = -49.65%
Formula
Percentage change = [(213 - 423) / 423] x 100
Subtract the new number by the original number
213 - 423 = -210
-210 ÷ 423 = -0.49645390070921985
-0.49645390070921985 x 100 = -49.65%