-51.85% is the change from 405 to 195
Calculation steps:
[( 195 - 405 ) ÷ 405] x 100 = -51.85%
Formula
Percentage change = [(195 - 405) / 405] x 100
Subtract the new number by the original number
195 - 405 = -210
-210 ÷ 405 = -0.5185185185185185
-0.5185185185185185 x 100 = -51.85%