-11.64% is the change from 670 to 592
Calculation steps:
[( 592 - 670 ) ÷ 670] x 100 = -11.64%
Formula
Percentage change = [(592 - 670) / 670] x 100
Subtract the new number by the original number
592 - 670 = -78
-78 ÷ 670 = -0.11641791044776119
-0.11641791044776119 x 100 = -11.64%