Talk:SAS: Zombie Assault 4 Skills/@comment-42.60.237.18-20141210174111/@comment-69.255.197.167-20141217023351

recovery formula is 30/(1+ (total recovery percent/100))

for example: a recovery bonus of 100% would be 30/(1+ (100/100)) -> 30/(1+ (1)) -> 30/2 = 15 seconds

your bonus of 255% would divide the original recovery time of 30 seconds by 3.55 to give you about 8.45 seconds recovery time