-76.36% is the change from 664 to 157
Calculation steps:
[( 157 - 664 ) ÷ 664] x 100 = -76.36%
Formula
Percentage change = [(157 - 664) / 664] x 100
Subtract the new number by the original number
157 - 664 = -507
-507 ÷ 664 = -0.7635542168674698
-0.7635542168674698 x 100 = -76.36%