-70.05% is the change from 591 to 177
Calculation steps:
[( 177 - 591 ) ÷ 591] x 100 = -70.05%
Formula
Percentage change = [(177 - 591) / 591] x 100
Subtract the new number by the original number
177 - 591 = -414
-414 ÷ 591 = -0.700507614213198
-0.700507614213198 x 100 = -70.05%