-50.51% is the change from 392 to 194
Calculation steps:
[( 194 - 392 ) ÷ 392] x 100 = -50.51%
Formula
Percentage change = [(194 - 392) / 392] x 100
Subtract the new number by the original number
194 - 392 = -198
-198 ÷ 392 = -0.5051020408163265
-0.5051020408163265 x 100 = -50.51%