-74.25% is the change from 497 to 128
Calculation steps:
[( 128 - 497 ) ÷ 497] x 100 = -74.25%
Formula
Percentage change = [(128 - 497) / 497] x 100
Subtract the new number by the original number
128 - 497 = -369
-369 ÷ 497 = -0.7424547283702213
-0.7424547283702213 x 100 = -74.25%