-69.48% is the change from 557 to 170
Calculation steps:
[( 170 - 557 ) ÷ 557] x 100 = -69.48%
Formula
Percentage change = [(170 - 557) / 557] x 100
Subtract the new number by the original number
170 - 557 = -387
-387 ÷ 557 = -0.6947935368043088
-0.6947935368043088 x 100 = -69.48%