-22.99% is the change from 670 to 516
Calculation steps:
[( 516 - 670 ) ÷ 670] x 100 = -22.99%
Formula
Percentage change = [(516 - 670) / 670] x 100
Subtract the new number by the original number
516 - 670 = -154
-154 ÷ 670 = -0.2298507462686567
-0.2298507462686567 x 100 = -22.99%