-72.36% is the change from 615 to 170
Calculation steps:
[( 170 - 615 ) ÷ 615] x 100 = -72.36%
Formula
Percentage change = [(170 - 615) / 615] x 100
Subtract the new number by the original number
170 - 615 = -445
-445 ÷ 615 = -0.7235772357723578
-0.7235772357723578 x 100 = -72.36%