-22.27% is the change from 651 to 506
Calculation steps:
[( 506 - 651 ) ÷ 651] x 100 = -22.27%
Formula
Percentage change = [(506 - 651) / 651] x 100
Subtract the new number by the original number
506 - 651 = -145
-145 ÷ 651 = -0.2227342549923195
-0.2227342549923195 x 100 = -22.27%