-22.84% is the change from 670 to 517
Calculation steps:
[( 517 - 670 ) ÷ 670] x 100 = -22.84%
Formula
Percentage change = [(517 - 670) / 670] x 100
Subtract the new number by the original number
517 - 670 = -153
-153 ÷ 670 = -0.22835820895522388
-0.22835820895522388 x 100 = -22.84%