-67.12% is the change from 517 to 170
Calculation steps:
[( 170 - 517 ) ÷ 517] x 100 = -67.12%
Formula
Percentage change = [(170 - 517) / 517] x 100
Subtract the new number by the original number
170 - 517 = -347
-347 ÷ 517 = -0.6711798839458414
-0.6711798839458414 x 100 = -67.12%