-77.26% is the change from 664 to 151
Calculation steps:
[( 151 - 664 ) ÷ 664] x 100 = -77.26%
Formula
Percentage change = [(151 - 664) / 664] x 100
Subtract the new number by the original number
151 - 664 = -513
-513 ÷ 664 = -0.7725903614457831
-0.7725903614457831 x 100 = -77.26%