-23.28% is the change from 670 to 514
Calculation steps:
[( 514 - 670 ) ÷ 670] x 100 = -23.28%
Formula
Percentage change = [(514 - 670) / 670] x 100
Subtract the new number by the original number
514 - 670 = -156
-156 ÷ 670 = -0.23283582089552238
-0.23283582089552238 x 100 = -23.28%