-16.04% is the change from 212 to 178
Calculation steps:
[( 178 - 212 ) ÷ 212] x 100 = -16.04%
Formula
Percentage change = [(178 - 212) / 212] x 100
Subtract the new number by the original number
178 - 212 = -34
-34 ÷ 212 = -0.16037735849056603
-0.16037735849056603 x 100 = -16.04%