-39.24% is the change from 497 to 302
Calculation steps:
[( 302 - 497 ) ÷ 497] x 100 = -39.24%
Formula
Percentage change = [(302 - 497) / 497] x 100
Subtract the new number by the original number
302 - 497 = -195
-195 ÷ 497 = -0.39235412474849096
-0.39235412474849096 x 100 = -39.24%