-12.35% is the change from 243 to 213
Calculation steps:
[( 213 - 243 ) ÷ 243] x 100 = -12.35%
Formula
Percentage change = [(213 - 243) / 243] x 100
Subtract the new number by the original number
213 - 243 = -30
-30 ÷ 243 = -0.12345679012345678
-0.12345679012345678 x 100 = -12.35%