-18.99% is the change from 795 to 644
Calculation steps:
[( 644 - 795 ) ÷ 795] x 100 = -18.99%
Formula
Percentage change = [(644 - 795) / 795] x 100
Subtract the new number by the original number
644 - 795 = -151
-151 ÷ 795 = -0.189937106918239
-0.189937106918239 x 100 = -18.99%