-51.64% is the change from 397 to 192
Calculation steps:
[( 192 - 397 ) ÷ 397] x 100 = -51.64%
Formula
Percentage change = [(192 - 397) / 397] x 100
Subtract the new number by the original number
192 - 397 = -205
-205 ÷ 397 = -0.5163727959697733
-0.5163727959697733 x 100 = -51.64%