-9.43% is the change from 212 to 192
Calculation steps:
[( 192 - 212 ) ÷ 212] x 100 = -9.43%
Formula
Percentage change = [(192 - 212) / 212] x 100
Subtract the new number by the original number
192 - 212 = -20
-20 ÷ 212 = -0.09433962264150944
-0.09433962264150944 x 100 = -9.43%