-46.6% is the change from 397 to 212
Calculation steps:
[( 212 - 397 ) ÷ 397] x 100 = -46.6%
Formula
Percentage change = [(212 - 397) / 397] x 100
Subtract the new number by the original number
212 - 397 = -185
-185 ÷ 397 = -0.4659949622166247
-0.4659949622166247 x 100 = -46.6%