-67.2% is the change from 497 to 163
Calculation steps:
[( 163 - 497 ) ÷ 497] x 100 = -67.2%
Formula
Percentage change = [(163 - 497) / 497] x 100
Subtract the new number by the original number
163 - 497 = -334
-334 ÷ 497 = -0.6720321931589537
-0.6720321931589537 x 100 = -67.2%