-66.42% is the change from 670 to 225
Calculation steps:
[( 225 - 670 ) ÷ 670] x 100 = -66.42%
Formula
Percentage change = [(225 - 670) / 670] x 100
Subtract the new number by the original number
225 - 670 = -445
-445 ÷ 670 = -0.664179104477612
-0.664179104477612 x 100 = -66.42%