-67.5% is the change from 600 to 195
Calculation steps:
[( 195 - 600 ) ÷ 600] x 100 = -67.5%
Formula
Percentage change = [(195 - 600) / 600] x 100
Subtract the new number by the original number
195 - 600 = -405
-405 ÷ 600 = -0.675
-0.675 x 100 = -67.5%