-59.25% is the change from 670 to 273
Calculation steps:
[( 273 - 670 ) ÷ 670] x 100 = -59.25%
Formula
Percentage change = [(273 - 670) / 670] x 100
Subtract the new number by the original number
273 - 670 = -397
-397 ÷ 670 = -0.5925373134328358
-0.5925373134328358 x 100 = -59.25%